Monogamy is the dominant pattern in most regions; but reporting of multiple partnerships is more common in men than in women, and generally more common in developed countries than in developing countries.
Monogamy is the custom or condition of having only one mate during a period of time. The word monogamy comes from the Greek word monos, which means one or alone, and the Greek word gamos, which means marriage or union. It literally means being married to one person. People currently apply the term monogamy to both married and unmarried couples.
— The Lancet